In the postmodern times we live with many imaginary worlds, various fictional works around. The traditional philosophies have excluded the problem of imagination, the experiences of the fictional works, by limiting the problems of art to the internal aspect of the art work. Walton and Currie are the representative contemporary philosophers who handle the problem of imagination by accepting the cognitive science and the psychology positively. Walton and Currie regard the appreciation of the art work as the game of make-believe. The game of make-believe is a sort of imagining. It originates from child's playing with the toy. As the child playes with the promise that the stump of a tree be imagined as a bear, the appreciators imagine some propositions of an art work with some promises. But Walton has the different opinion from Currie's about the nature of imagining. Walton considers the imagining in the appreciation of art works as self-imaginging, which means 'the appreciator, situated himself in the fictional work, imagines himself as the observer of the fictional events', while Currie takes it for 'the impersonal imagining', that is the imagining of 'just some events occur'. Currie's theory fails to explain the appreciator's empathy in the appreciation of art work, but Walton's theory succedes in explaining the appreciator's participation in the art work. It's because while according to Walton's theory, appreciator's imaginging about himself has a direct relation to the fictional object, Currie's theory argues the distancing of the appreciator and the fictional object.